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首次从大戟科植物珠子草中分离得到软木三萜酮。利用晶体X -射线法与一维和二维核磁共振法测定了该化合物的结构 ,指认了核磁共振信号的归属。晶体衍射结果表明 ,化合物是以斜方晶体空间群形成晶体 ,晶体数据维P2 (1) 2 (1) 2 (1)witha =6 36 1(2 ) ,b=13 933(3) ,c=2 8 4 4 0 (6 ) ,α =90° ,β =90°,γ=90° ,V =2 5 2 0 6 (11) 3 ,Z =4 在晶体中存在一个微弱的分子间的作用力C H O =C ,此作用力被认为是晶体形成的重要因素。NMR方法确定化合物的结构相同 ,表明了软木三萜酮在晶体和溶液具有相同的构型。
For the first time, the cork triterpene was isolated from the seeds of Euphorbiaceae. The structure of the compound was determined by X - ray crystallography and one - dimensional and two - dimensional nuclear magnetic resonance (NMR) methods, and the assignments of nuclear magnetic resonance signals were identified. The results of the crystal diffraction show that the compound forms a crystal in a space group of orthorhombic crystal. The crystal data dimension is as follows: (1) witha = 636 1 (2), b = 13 933 (3), c = 2 8 4 4 0 (6), α = 90 °, β = 90 °, γ = 90 °, V = 2 5 2 0 6 (11) 3, Z = 4 There is a weak intermolecular interaction in the crystal Force CHO = C, this force is considered to be an important factor in the formation of crystals. The NMR method confirms that the compounds have the same structure, indicating that the cork triterpenoids have the same configuration in the crystal and solution.